We’re at the start of the tomato growing season here in Kentucky and canning the fruits of our labor and love seems far off, but now is the time to begin planning. How many tomatoes will you need to meet your canning goals?
The answer depends upon what varieties and what canning products you wish to produce. Although the answers vary, a common gauge is to grow 4-6 tomato plants per person who will consume the products (sauce, juice, etc.) throughout the year after canning.
On average a tomato plant should yield around 5-10 pounds of tomatoes per season. If you use tomato cages, that average can go up to 20 pounds per plant. Cages also have an added benefit of helping to produce damage-free tomatoes.
According to the USDA National Center for Food Preservation, you’ll need:
- 35 pounds of tomatoes for 7 quarts of thin Tomato Sauce
- 46 pounds of tomatoes for 7 quarts of thick Tomato Sauce
- 23 pounds of tomatoes for 7 quarts of Tomato Juice
- 22 pounds of tomatoes for 7 quarts of Crushed Tomatoes
- 24 pounds of tomatoes for 7 quarts of Tomato Ketchup
- 21 pounds of tomatoes for 7 quarts of Whole or Halved Tomatoes
- 30 pounds of tomatoes for 7 quarts of Spaghetti Sauce
To further determine how many tomato plants you ideally need, it helps to take a look at your current eating habits. For example if you typically have an Italian dish using spaghetti sauce every other week, you’ll likely need around 26 quarts.
Assuming a 10 pound yield on your tomato plants, at 30 pounds per 7 quarts, you will need about 128 pounds of tomatoes, which means you’ll need to grow approximately 13 plants. This should meet your spaghetti sauce canning goal of 26 quarts.
Using estimates should get you close to your goal, but of course factors like weather, disease, animal interference or a wildly-successful green thumb can dramatically affect your results.
If your yield happens to be under and each plant only produces 5 pounds of tomatoes, you will only obtain half of your canning goal. If this happens, there’s no need to despair, you can pick up the extras from your local farmer’s market or produce store.
If your yield happens to be over and each plan produces a whopping 25 pounds of tomatoes, use the abundance to enjoy extra meals throughout the year, to gift to family and friends, or perhaps to even make a few extra dollars by selling your abundance to someone who fell short on their plans! Check with your local extension office and county office to find out where you might be able to sell your extra produce and if the county has any specific laws governing the sale.
Though you cannot predict the ultimate result, it still pays to plan ahead to get as close to your goals as possible.
Looking for a fresh tomato recipe? Try our Easy Cheddar Tomato Pie
This is great information … very useful! We canned tomatoes for the first time last year and it was hit & miss. So your chart will give me something to work with and I’ll plan better this year. Thanks so much! 🙂
Glad to hear it will be handy for you. Do stop back and let us know how your canning efforts go this year!
Selecting the proper location for your tomatoes can make the difference between healthy plants and sickly ones.Tomatoes need full sun; that means at least 10 hours a day and more is better.Even a little afternoon shade can have a big impact on plant growth and harvest.
I just stumbled on this post today as I was planning how many tomatoes to start. Hoping that I have a great season this year. I’m passing this on to my friends on Facebook.
Wonderful! Thank you! So glad that you found my method useful. Enjoy your garden this spring!
Very down to earth, easy to understand and informative site. Just stumbled on when trying to calculate how many plants needed for local food bank new project to can 400 quarts of tomatoes.
Thanks so much Susan for the lovely feedback! I’m so glad you found this resource useful for your project. Sounds like a wonderful plan, wishing you the best of luck!
What a profoundly helpful post! I’ve only got a basket full so far but I’ll keep saving them till I have enough to can.
Thanks so much for the awesome feedback! Glad you find it to be so helpful!